1973 Blue Bird

Post by **stuartcnz** » Mon Mar 21, 2011 1:34 am

Looks like you are starting to make serious progress Rudy! I bet you are feeling a lot more confident about it all now.

Rudy · Post by **Rudy** » Mon Mar 21, 2011 2:41 am

More pics of the old fuel pump.

Here you can see that when the motor was running and the fuel was spraying out of the fuel pump, the underneath of the bus was getting wet.

Rudy · Post by **Rudy** » Mon Mar 21, 2011 3:04 am

The BIG air filter unit. I became frustrated working around it, so I removed it.

A QUESTION. What is that unit to the left of the air filter? I think it is a reservoir for power steering. There are more pics of that.

I have these nice wrenches. I used one to remove the air filter unit.

Here, the air filter unit has been removed.

It looks dirty in that hole. I cleaned it before I reinstalled the air filter unit.

Rudy · Post by **Rudy** » Mon Mar 21, 2011 3:18 am

Now I had access to the fuel pump. I used a small butane torch to heat up the brass fittings so that I could remove the fuel lines. Here you can see that one of the fuel lines have been removed without ruining the flare nut.

Rudy · Post by **Rudy** » Mon Mar 21, 2011 3:40 am

A few pics of the motor. I traced the fuel lines. I will point them out later.

The rubber on the inside of the dog house is falling apart. I removed the loose stuff when I finished the fuel pump project. What is left on that surface is the fiberglass.

Rudy · Post by **Rudy** » Mon Mar 21, 2011 3:50 am

More to come.

I would like to take this time to thank all the "bus family's" responses to the fuel pump project.

Special thanks got to Chuckles and Dennis for daily phone calls and support.

Extra Special Thanks go to Chuckles who through a series of phone calls around the US found a fuel pump in Detroit. It was only $25 dollars. The pump, although 38 years old, was new in the box.

The box is cool. It is a CAT original part. I have a pic of the box.

I gotta put all my tools away now.

ezrablu · Post by **ezrablu** » Mon Mar 21, 2011 4:25 am

WOW...nice find Chuck!

Very glad you have over come this mechanical bump....and very blessed to be a part of this awesome bus family full of good peeps

Jones'n4chrome · Post by **Jones'n4chrome** » Mon Mar 21, 2011 5:17 am

Good job Rudy.
Here is a tip for the future. Anytime you have to work around a hole like that, it's a good idea to cover it with something. Cardboard and tape or a clean towel.
Not only will it keep it clean, but if you were to drop a nut or a screw, you could be screwed.

Rudy · Post by **Rudy** » Mon Mar 21, 2011 5:20 am

Chuckles, In the next pics, you will see that I did indeed cover the air filter hole and the cam hole for the fuel pump.

I'll post them later.

Gotta go get some home made food today.

Dennis The Bus Dweller · Mon Mar 21, 2011 5:28 am

home made food

To hell wit da fuel pump, get on wit da food

Rudy · Post by **Rudy** » Mon Mar 21, 2011 10:46 am

Now I will point out the flow chart of the fuel lines. I am using a screwdriver as a pointer. Look at where the tip of the screwdriver is touching.

The first pic shows the lines that come from the fuel tank and returning to the fuel tank.

In this pic you will see the screwdriver pointing to the fuel return line back to the fuel tank. Follow it up a little and you will see where it connects to a short rubber hose. That is where the passenger side cylinder sends fuel back to the tank.

Notice to the left of the screwdriver handle, you see a tee fitting where the two fuel return lines that come from the heads (one from each side) and meet.

This photo shows the return line from the driver's side of the engine to the tank. Follow the line up and to the left. You will see where it connects to the cylinder head.

Rudy · Post by **Rudy** » Mon Mar 21, 2011 11:05 am

This pic shows that the screwdriver tip is pointing to the line that comes from the fuel pump (lifter pump) that I just replaced. It goes to the fuel filter and then goes to a 12 volt valve attached to the injector pump.

The 12 volt valve shuts fuel feed to the injector pump when you turn the ignition key off.

Here is that valve.

Dennis The Bus Dweller · Mon Mar 21, 2011 12:56 pm

Nicely done Rudy

Rudy · Post by **Rudy** » Mon Mar 21, 2011 2:45 pm

...and you thought I was done with the engine pics

There's more. Wait 'til you see the cool CAT box that the fuel pump came in.

Rudy · Post by **Rudy** » Mon Mar 21, 2011 11:21 pm

Here is a pic of the (new) fuel pump.

Actually it has been in this box for 38 years.

There are a few more pics from the fuel pump project which I will post.
I hope you have enjoyed this technical show and tell.

NOMADICISTA

1973 Blue Bird

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